Matemáticas mentales Worksheet

Recommended for 1er grado — 5to grado

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Matemáticas mentales Worksheet

Name: ____________________Date: ____________

Instructions: Usar estrategias mentales como sumar diez, duplicar y compensar para calcular rápidamente.

20 problems

  1. 39 + 20 = ______
  2. 66 + 20 = ______
  3. 2 × 10 = ______
  4. 69 + 10 = ______
  5. 70 + 20 = ______
  6. 84 + 10 = ______
  7. 6 × 10 = ______
  8. 48 + 10 = ______
  9. 52 + 10 = ______
  10. 19 + 10 = ______
  11. 88 − 10 = ______
  12. 21 − 10 = ______
  13. 28 + 10 = ______
  14. 58 + 10 = ______
  15. 74 − 10 = ______
  16. 9 × 10 = ______
  17. 89 + 20 = ______
  18. 55 + 20 = ______
  19. 43 − 10 = ______
  20. 40 + 20 = ______
Matemáticas mentales Worksheet — Free Printable with Answer Key | WaffleMath